Huntsman Corporation Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Restructuring, Impairment and Plant Closing Costs - Reserves for Restructuring, Impairment and Plant Closing Costs By Segment and Initiative (Details)

Note 7 - Restructuring, Impairment and Plant Closing Costs - Reserves for Restructuring, Impairment and Plant Closing Costs By Segment and Initiative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accrued liabilities, beginning balance	$ 31
Accrued liabilities, ending balance	40
Current portion of restructuring reserves	26
Long-term portion of restructuring reserves	14
Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	14	$ 0
Restructuring payments	(7)
Initiatives 2021 [Member]
Restructuring Charges, Total	2	$ 0
Corporate and Reconciling Items [Member]
Accrued liabilities, beginning balance	0
Accrued liabilities, ending balance	13
Current portion of restructuring reserves	5
Long-term portion of restructuring reserves	8
Corporate and Reconciling Items [Member] \| Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	14
Restructuring payments	(1)
Corporate and Reconciling Items [Member] \| Initiatives 2021 [Member]
Restructuring Charges, Total	0
Polyurethanes [Member] \| Operating Segments [Member]
Accrued liabilities, beginning balance	12
Accrued liabilities, ending balance	11
Current portion of restructuring reserves	11
Long-term portion of restructuring reserves	0
Polyurethanes [Member] \| Operating Segments [Member] \| Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	1
Restructuring payments	(2)
Polyurethanes [Member] \| Operating Segments [Member] \| Initiatives 2021 [Member]
Restructuring Charges, Total	0
Performance Products [Member] \| Operating Segments [Member]
Accrued liabilities, beginning balance	2
Accrued liabilities, ending balance	1
Current portion of restructuring reserves	1
Long-term portion of restructuring reserves	0
Performance Products [Member] \| Operating Segments [Member] \| Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	(1)
Performance Products [Member] \| Operating Segments [Member] \| Initiatives 2021 [Member]
Restructuring Charges, Total	0
Advanced Materials [Member] \| Operating Segments [Member]
Accrued liabilities, beginning balance	9
Accrued liabilities, ending balance	8
Current portion of restructuring reserves	5
Long-term portion of restructuring reserves	3
Advanced Materials [Member] \| Operating Segments [Member] \| Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	(1)
Restructuring payments	(2)
Advanced Materials [Member] \| Operating Segments [Member] \| Initiatives 2021 [Member]
Restructuring Charges, Total	2
Textile Effects [Member] \| Operating Segments [Member]
Accrued liabilities, beginning balance	8
Accrued liabilities, ending balance	7
Current portion of restructuring reserves	4
Long-term portion of restructuring reserves	3
Textile Effects [Member] \| Operating Segments [Member] \| Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	(1)
Textile Effects [Member] \| Operating Segments [Member] \| Initiatives 2021 [Member]
Restructuring Charges, Total	$ 0